i love/hate science

i hate it like i hate othello and 1984.
i think that what i "think" i feel is really just a product of the chemicals bouncing around in my head. i'm only attracted to a man because his immunities are different than mine and we'll make good babies and he makes certain chemicals and hormones in my head and body go crazy. (or, if i am on the pill, it makes my body misread things)

i like to read these articles about love and our bodies and the chemicals and isn't oxytocin neat, but at the same time it depresses me because perhaps what i thought was love was really just science and biology.

can someone really love you or are they only acting a certain way in the hope of rewards (it makes them feel good, they want sex, they want something)
how can i reconcile being a halfway logical practical person with being an emotional hopeless romantic? can it be done?

sometimes i do things and i wonder if i do them selflessly, or do i have some other motive? of course i am not a great example, i'm not the best of people, but mine is the only brain i have to pick.

i would like to believe that love is not just science, but i am not sure.