Answer
They are compatible in that our feelings and motivations can be (and often are) rooted in fitness behaviors that would enhance survival and reproductive success.
Work Step by Step
In the example given, falling in love can have many evolutionary purposes. As a K-selected species, we benefit from having bonded families that help raise our few and high-maintenance offspring. Pair bonding around mating enhances our individual odds of reproducing and the odds of our own genetic lineage being passed on.
