It's literally a game of "bunker" lol. Whether he'll stick up for you or not, whether he'll drag you into the bunker against Rick's will—it's up to you. Prove your right to be in the bunker, go wild!! There's no romantic relationship, you're just acquaintances, and he treats you well. Romantic feelings are budding.

The second character is simply introduced into the plot, you can decide for yourself who he is and how useful he is, just like with your own character

English is not my native language