Help me find the name pleaseeee

I’m trying to remember the name of this BL… My english is not that good so I’m sorry if I’m not making any sense lol but it’s basically about a polygamous couple, but like, one of the guys only accepted the MC into the relationship because he was in love with the other one, and the mc was also reluctant because he didn’t think he would be in a polygamous couple. Then the MC and that guy ended up having sex for some reason, just the two of them, and the other boyfriend got jealous or something, I think? I don’t really remember. The MC is reallyyy skinny, and both of his boyfriends are buff. One of them is tan and has long hair, if I remember correctly, thank you in advance!!