What do you get out of making new friends and maintaining friendships?
I get more entertainment and friends to hang out with when I'm bored. More people to talk to. More people to help. More people. The more the merrier. Also if one of my friends is absent I can talk to someone I've made friends with.
What do you get out of being in a romantic relationship?
Butterflies in your stomach. And kisses. And gifts. And just in general, good feelings.. Until you break up
What necessarily separates your romantic partner(s) from your friends?
Romantic partners are for romance.. Friends are for doing stupid **** with.