Irritating juvenile

I’m not sure if this should not be in the rant section but any advice is appreciated. So newlyweds TTC and over 36. I’m more of a subtle, low key, low sexed gal and he appears to be the same. When it comes to sex though, his inner delinquent comes out every time and it’s the most off putting thing. He slides up close and quickly reaches out with one finger to flick my nipple or tap my crotch while we are having a very unsexy conversation. Then he grins and scurries away with me watching open mouthed. Or he’ll keep grabbing at his dick stroking it through his pants or boxers before he reaches for my hand to try and get me to touch it or feel on it. Makes no sense to me again due to the context in which he does it. I just want to scream “Use your words!” I think he thinks it’s cute but it’s not and I have said to stop but the words don’t seem to be getting through. I loose the mood(which is already difficult for me to get into) every time because of my irritation.what can I do?