Questions: Dating

Someone here can't remember who and which post told me that on dating apps that women can select a height preference in men yet men cannot select a weight preference for women. So are you guys not able to select fit or skinny? Do you have to keep swiping?

So backstory: I work in a shop and this woman has been trying to set me up with her nephew for years, I’ve always said no because I genuinely wasn’t looking but when she asked last week I was curious so I asked a bit about him and he seems like a great guy, I said no to her setting us up mostly because she wanted to bring him to the shop and 1 I’m literally working and 2 I think it’d be awkward for the both of us to talk in front of his aunt and my mom, but I did follow him on Instagram and he followed me back. Now I’m thinking about DMing first since I think he’s on the shy side but I’ve no idea on what to say since we’ve never spoken before and tbh I’m kinda shy too so I’m really nervous, also I have no clue if his aunt mentioned me and that’s why he followed back