Dating, marriage, or being in a relationship is a (choice).
We tend to fall in love with those who (make us feel good) when we are with them.
Inherently I suppose being happy means (getting what you want) which might be considered “selfish” in the eyes of some people. However it is unhealthy to love someone who does NOT love you. In order for him or her to be “the one” they must also see you as being “the one”. In order to have a healthy relationship with others you must first love yourself enough to be (selective) with whom you become emotionally invested. "Selfless or unconditional love" is reserved for parents and God. The majority of other loving relationships come with "deal breakers" or out clauses. Each of us is allowed to determine our own.
Love to me is finding someone who wants what you want, naturally agrees with you on the major things in life, and feels just as passionate about you as you do for them.