Does my 28 year old boyfriend have a crush on my 18 year old sister?

Anonymous
My boyfriend vented to me about his younger sister calling him and crying to him about her relationship problems. Then he asked me if my sister has shown any interest in boys or if she talks to me about boys. I said no, not yet, she's very private about her crushes. I told him my parents want her to finish school before dating. He said he gets it.

Another time I told him how at sports, guys would flirt with both me and my sister. His eyes got big and he said "You AND your sister?" My sister is a lot prettier than me. Is it possible my boyfriend has a crush on her?
Does my 28 year old boyfriend have a crush on my 18 year old sister?
5 Opinion