Love definitely is all about how the person makes you feel. Its about safety trust and partnership. though it is selfish in a way it makes both people who are in love have a vested interest in each other causing them to want to protect each other and make the other one happy so that in turn you can be happy. Although research shows this drug called love starts to wear of within a few years if not protected

You fall in love with the person (or whom you believe the person to be). The reaction to this love is a feeling of contentment in yourself.

Ok, lets see... true love. Hmmm. There's basically two dimensions that interplay in complicated ways... I'll call them the "horizontal dimension" and the "vertical dimension". The "H axis" has to do with our sense of personal self-worth and value... our craving to "be someone" by being reflected in the eyes of another... our deep rooted desire to belong... our fears that we're not good enough or not lovable... these are the "ego concerns". They're all about "who am I as an individual". The H axis is "psychological". The "V axis" has to do with the universal dimension of being: unconditional love, wholeness, compassion, etc. This is about who we all are in an ultimate sense... the V axis is "spiritual". Getting these two dimensions to play nice with each other is the challenge of romantic love. Falling in love hooks our hormones, yearnings, cravings, and aspirations up into a complicated concoction that turns life completely upside down... it's a very heady mix. There's no single statement which sums it all up. - Falling in love "resonates" with the universal love which all beings are at a fundamental level; like the light of the sun poking through a hole in the ego. - Falling in love is dangerous: the temptation is to cling to the other person as if they were the source of our being. Nobody can live up to that, and the disappointment will be proportionate to the degree of clinging. - Falling in love with an individual is a precursor to falling in love with humanity. As the "discriminating love" for a specific person spreads out and stops discriminating, we increasingly become who we truly are. - Falling in love is only possible for those who are strong enough to lower the defenses of ego. This is in part why love is so dangerous: nobody can hurt us like those we've allowed in past the gates willingly. Ultimately, trusting is an act of courage -- nobody can "prove themselves worthy" beyond a certain point, we have to meet them half-way with an act of will: "I will allow you to get close enough to hurt me". This willingness to become one with another is profoundly moving because it resonates with our true nature: we actually ARE one with all of humanity in the ultimate sense.

how that person makes you feel about yourself for me and my boyf

Short answer, the person.