After 10 years of being with someone

I was 10 years with my ex boyfriend... and sexually i was not happy... i liked some things we did but a lot of times when i wanted to get down and do things he didn’t want to. I was sad most of the time... we left each other a few months ago. And i met up with a friend of mine from high school.... have never had so many orgasms in my life. And it saddens me a little that he asks me to tell him and i sometimes don’t know when i orgasm, although sometimes i do since after i start shaking a lot Has that happened to any of you guys ?

He actually makes me more interested in my sexuality and want to try new things.. even though we are just friends with benefits.

Ps: we both got out tests done before we did anything and they are negative