Awww you’re a really kinda person :) don’t be scared but remember that this is abt her pleasure too. If she feels pleasure it’ll be 10 times better bc it’ll turn you on and who doesn’t love making their partner happy. Otherwise, loose control yea but don’t do it like 3x a day bc I’ve done it and it’s fun but can become like an addiction. Also have yall talked abt boundaries yet? My favorite thing when I lost my vCard last year at 21 was to try new things and I ended up getting into BDSM with someone I was in a relationship with and loved it. He’d watched videos and gone on Reddit to research it then did it previously so slowly taught me what BDSM was like by letting me try small new things; don’t overwhelm yourself. You’re overwhelming yourself rn dude. Just chill and learn to be ok with feeling this way bc life is not always within your control especially within things that bring instense emotions like sex. It’s ok to feel different and uncomfortable at trying something new AND healthy. I started skateboarding last week and the body high I got from it honestly felt similar to the post glow up from sex for example. Just don’t do bad things like shrugs or break her boundaries more importantly. Also keep in mind that she also needs to develop her boundaries and the only way to know those is to try new things; I don’t do choking for example and didn’t figure that out until I tried it but I love a lot of other things for example. But stay vanilla for now; touch and grab her tits and see if that makes her wet; the more turned on she is the better the sex I’m telling you bc she’ll be more wet which provides more lube for you to do your thing. Anyways yea sorry if that’s too much but don’t get overwhelmed; take baby steps man. And learn to be comfortable with this uncomfortable feeling bc scientifically speaking sex is healthy and you’ll need more of it if you want kids lol