Shakey Legs?

I’ve only been with my new boyfriend for maybe 3+ months? Before this I was with my previous boyfriend for 2 years.

With my new boyfriend whenever I orgasm or he does something I like (which happens often 👏) my legs will just start SHAKING. Last night I was riding on his 🍆 and I had to stop because my legs started to shake 😭. He says it’s hot but it’s NEVER happened before... does this happen to other ladies?