To love someone unconditionally means that you love the person exactly as they are, exactly as they were before, and exactly as they will be in the future – because people change all the time, so if you love the person, you will love them even if they become something you disagree with. How many people can say that about their “lover”? Love is not about you or your pleasure or your amusement. It’s not about what you get out of it or what the other person can give to you. It’s not about having a trophy you can show off with and tell people “This is *MY* girlfriend/boyfriend/wife/husband/son/daughter/whatever”. You do not “own” anyone. It’s not about you feeling ‘proud’ to be with someone who always agrees with everything you say and do and never does anything you disagree with. Unconditional love means that the person can just live their life exactly as they choose and you will always be there for them no matter what.
So, how does unconditional love fit in with relationships and marriage and sex and all that stuff the whole world keeps going crazy over? It doesn’t, really. It doesn’t “fit” in anywhere. Relationships are like trying to put love into a box and keep it there, except love is infinitely sized, and the box is… well, there is no box large enough. And a normal, conventional marriage is quite possibly the worst possible way to show someone how much you love them.
Unconditional love is more of a spiritual thing. It’s not bound by physical things, like blood relations and the desire to procreate. It has nothing whatsoever to do with sex. Most people are in relationships because they’re horny and/or lonely, even if they genuinely think they love the other person. But if the person they “love” suddenly lost their “equipment” for whatever reason, would they still want to be with that person? Would they get jealous if the person they “love” wanted to spend time with other people as well? Relationships based on needs are not unconditional.
In order to truly understand love, you must first forget everything you have ever learned about it from society and anyone else (including what I just said). You are the only person who can tell you what love is. The only reason I’m writing all this stuff is because people always try to fit “love” in with things like dating, relationships and marriage and all that. You can’t make any sense of it if you keep doing that. You have to get rid of everything you think you know first.