I (22F) have sexual problems with partner (21M)

We’ve been together now 10 months. He (21M) is very high libido…I (22F) don’t know where I stand as I’ve always been uncomfortable with sex because I’m insecure around my body and whatnot. I would’ve liked to think of myself as high but now I might been a low? I’ve recently mentioned to my partner how I don’t get in the mood for sex due to him always groping me randomly/or telling in a joking matter to turn over occasionally (due to it being the favourite position) and I’ve said he actually needs to kiss me and touch me romantically otherwise I just feel kind of awkward to the point I’m laying there and I think…is it appropriate to moan now, are we done with joking around?

And he brought up how I never initiate. Which was another problem my last relationship had. But I’m just never going to initiate if I don’t feel comfortable with him initiating the way he has been. I know I should talk about this in depth with him but the whole topic makes me nervous and uncomfortable to discuss.

TL;DR problems with talking about initiating sex romantically