Matthew is your boyfriend for 4 years now and you dicaded to invate him over for dinner

As you and your family was eating you noticed that your lol brother was thouching Matthew's leg with his leg foot, you dicaded to ignore it but then after dinner they got up and went to your lil brother's room, you Didnt really thought about it but when you passed by the door you heared kissing noises so you opened the door and sawd your boyfriend, Matthew on top of your bro, kissing him