Many people in the world however often have a much more difficult time at love, I consider myself rather lucky. Though I think one of the things that tends to make it easy for me is that I approach love logically and understand the reality of it. Yes if you analyze Love scientifically you find it's all a mass of complex emotions, mental states, hormones, chemical imbalances, and whatnot, but I think for most people they're afraid that if you analyze Love critically it loses something. Despite being a logical mind that understands to some degree what love actually is, I am still an incurable romantic who loves physically, emotionally, figuratively, and metaphorically. Just because you acknowledge something is attributed to a mass of chemicals being fired from your crotch to your brain, doesn't mean it cannot be romanticized. Your mind is your reality, so whatever you deem real to you is real. No matter what love actually is, billions of people in the world can easily and without hesitation attest to the fact that it is a real thing, as tangible as any other thing you can sense with your five senses, and to many even more so than that which can be seen.
Polyamorous families often mention the biggest hurdle in the relationship is of course jealousy, and it's generally agreed one of the best ways to resolve it is to see what the person adds to a relationship instead of looking at it comparatively as in "What does she do that I don't?" Some polygamists even state that it's unhealthy to view your partner as a possession, we try too hard to make our significant others a high value commodity, which has the unfortunate implication of undue emotional stress for both parties when taxed too extremely.
Ever since I was 16 I've been giving people relationship advice, which is rather laughable since with the exception of several "online only" girlfriends, I've only ever been in (and still am in) one long term relationship. Though I don't judge a person's knowledge on a subject solely on experience, observation is a major key, and is one of the founding principles of psychology. I don't have to experience someone else's psyche to understand why they do the things they do the way they do them, all I have to do is observe and analyze. It's easy to avoid stupid mistakes by just looking at others who have done the same.
Here's my own little bit of advice on how to have the best love possible:
Before you even consider loving someone else you need to make sure you are emotionally ready for love. It's understandable to look for a partner to "complete you", but often times this can be confused with actually using someone else as a crutch. You should learn to love yourself before wanting someone else to love you. If you cannot be satisfied with who you are, then it creates a vacuum and all the love someone else gives you won't fill it.
Total Honesty. Just as important as communication you have to open and honest with your partner. Share in everything, and regret nothing. If you always discuss your finances with your partner, make every monetary transaction a team discussion, and be completely open with what's in your wallet and where the money goes, then you never have money fights. If you always tell your partner about all your friends and discuss where you go, and what you do, then you never have the green eyed monster back at home wondering what you've been out doing.
I was a virgin when I met my girlfriend, she has been my first, and only. In some ways I wonder what it'd be like to be with other women, I am curious if it's different or exciting. Yet in all ways I will never regret my girlfriend being my first, or being with her now, or staying with her for life. This is something I've shared with her before, and the answer wasn't "go sleep with other women", it was instead to develop a strong intense relationship that fulfills all emotional needs, to where I won't want anyone else. Thoughts of infidelity are not bad, they are simply manifestations of an emotional need, instead of letting these fester though and have thoughts become actions, you can be open and honest with your partner and discuss how you wish to evolve your relationship together, for some couples having a polyamorous relationship is preferable, for others like my own, they instead develop an intense bond on multiple levels that fulfills all those needs, every person is different, and communication and compromise can lead to great results. Down one road you have betrayal and hurt, and down the other you have a long and happy and prosperous relationship.
You may have noticed during this whole post so far I've not mentioned marriage once. In the final assessment of things, if you have the relationship you want, you won't care what it's called, marriage shouldn't be a life altering event, or an upgrade in the relationship, or a change waiting to happen, it should simply be a celebration of your love, and a way to acknowledge to those important to you of who you plan on being with. A truly in love couple will need no vows to bind their love, it will always be there even if unspoken.
Til' Death Do Us Part!