Are you suggesting, logan, that biology has nothing to do with our associational preferences? That is overwhelmingly contradicted by science, so I must have misinterpreted????
After emphasizing the word "nothing", the answer clearly is, "no". My brain is part of my biology so my biology clearly has something to do with the preferences that result from the synaptic processing that takes place there. The biology that makes me a member of one gender group of the species or drives my sexual interests, however, does not predetermine who my friends will be. What kind of person they are, how the behave toward me and those I love, etc., leads to those choices.
The argument to the contrary is consistent, biologically, morally, and legally, with the argument that my sexual preferences should affect my marital choices.