Kiss to Kirai no Hantai

Are the two of us friends, or are we lovers? It's not clear how he regards us. If I say, "let's kiss," he'll kiss me. If I say, "let's move in together," he'll smoothly accept. He'll indulge me, but he won't express a desire for anything in return. Just when we've moved into our new place, his little brother who loathes me appears. Because it's a good opportunity, he wants to keep tabs on us. If it comes down to me or his family, he'll choose me...right? (Source: Nakama)