I will talk about this in only few words. If what you call love changes with space and time. Space and time moves through a flux of impermanence. This is not love, it is lust. Lust does not last very long and it is devastating for long term relationships. A true love is nothing more than a friendship. What does a good friend do to other? They are trustworthy, respectful and wishes for complete wellness of their partners/friends. The whole purpose of a guy and a girl getting together is to reproduce. There is no mystery to that, but when you are speaking of love, then it really doesn't matter if it is with a guy/girl, or anyother beings in the universe. If you are looking for a true love, then that true love that u're seeking is not bound by time and space. Just like a virtue of goodness is not bound by space and time. This is very difficult to find since our hearts and minds are not cultivated to live with this virtue.. Even as I'm writing this, I don't have this characterstic. I still have lust connotation attatched to love. At least I'm fully aware as this happens.