I think my older sister likes my boyfriend

[SilentScream244]

Me and my boyfriend have been together for 9 months, its a wonderful relationship but over the past few months, I've noticed my sister acting different whenever he comes over to my house. Like whenever I ask my mom if he can come over and she'll say yes, my sister would just pop in the conversation and ask "Brian's coming over? What time??" And I would just think "Why does she want to know???" And then when he comes over and we hang out in the living room together my sister would just walk by us a million times and sometimes I would catch her looking at him. She would even wear super short shorts and a shirt that shows her chest area whenever he comes over, she's done it 3 or 4 or 5 times already. But it's weird. Whenever HER boyfriend comes over, she wears regular gym shorts and a shirt and acts normal. Are these signs that she does like my boyfriend cause I think they are and if she does like him, I need to tell my mom so she can tell her cause she listens to her(kinda)

[taylalatbh.]

Those are definitely 'signs' that she could be interested in your boyfriend, but it's not a clear indication. So it's a good idea to really think about it before you confront her about it so you don't cause an argument. If she's not hurting anyone, though, and your boyfriend isn't bothered then I don't see the harm. As long as she keeps herself to herself physically and gives you some alone time with him then you might be better just leaving it as it is.

Either way, if you're really concerned then speaking to her might be a good idea. She's your sister, I'm sure she'd understand your concerns.

[Eternal]

How long has she been with her current boyfriend? When you get comfortable in a relationship, sometimes girls don't put in as much effort to look nice which could be the case here.
Additionally, while those do sound like signs that she may like you, as Tayla said you shouldn't consider it an indication that she does. If you really want to know, you could directly ask her and let her know why you are concerned about this. However it could be she just asks when he's coming because she's curious or because she wants to make her plans around what's going on in your home.