Didn’t realize I could get him off through his nipples

I (19F) was making out with a cute guy I went on a few dates with on a secluded beach. It was a cloudy day so there weren’t a lot of people around. I was in a two piece swimsuit while he was shirtless in his swimming trunks. He started to get a bit naughty and put his hands underneath my bikini top and started playing with my boobs and nipples.

I returned the favour by starting to fondle and squeeze his muscular pecs. I took my top off and he started licking my nipples. I started twisting his nipples and he started moaning as I saw a big tent build up in his trunks. His tongue felt amazing flicking my nipples as I kept twisting his now very hard and pink nipples. He kept moaning and his dick tent was twitching. But he then suddenly moans “oh fuck…” and quickly pulls off his trunks as his rock hard cock starts shooting multiple ropes of cum over his abs.

“Oh fuck … im so sorry” he moans slightly embarrassed.

I felt a bit surprised but also really accomplished that I made him cum handsfree. I took some of his cum and rubbed it all over my nipples.