Responses
TOTAL AGREEMENT(づ￣ ³￣)づ
Its not really weird that he hangs out with his girlfriends little brother. Its like saying I hang out with my brothers girlfriend. Im always really close with my brothers girlfriends, but not in the wrong way.
Its just yaoi logic
Tbh, his sister is the worst girlfriend. She's lonely and she asked her little brother to fix her relationship. Of course it's a little weird that he hangs around with her little brother so much but still. If it bothers you so much talk to your boyfriend. Don't go meet your ex boyfriend just because you're lonely. If she was still friends with her ex ok, but this was clearly different. I absolutely hate girls like that.