Real first ball busting from my girlfriend (yesterday)

I’ve been into ball busting for a while and when me and my girlfriend “Jenna” go to got together we allways talked about being switches and she would be on top sometimes and I’d think about her ball busting me a lot. Over the course of our 6 month relationship we had kinda drifted away from her being top (to my dismay) until these last week or two. We started 69’ing with her being on top. Well she started having alot of fun in that top position and started to experiment with breath play doing that because it’s what she found attractive. I mentioned to her squeezing my balls and she did. She would be on top of me squeezing my balls pretty hard and sitting in my face really deep so I can’t breath and she slapped my dick a couple of times and she liked that because she said she liked how i squirmed when she did it. We were cuddling after and I mentioned to her slapping my balls and I told her she could do it harder then she think she could. She grabbed me by the balls and started squeezing and asked if that’s hard enough. Flash foward to later we’re doing the dirty on my face again She starts squeezing my balls again but I can tell a little bit harder and then she slaps my balls and I jumped(the best I could with her on top of me). Would slap them a couple time in a row, held my legs down when they would naturally come back up and she told me to take it for her. After a couple of slaps I was really hurting and I was kind of regretting letting her do it because of how bad it hurt but she just kept going for a while, then she gave me a break, and then kept going. After the break when she was squeezing them they felt like they recovered but after she started slapping them again it hurt even worse then before, things didn't go to long the second time though. Afterward she said she liked feeling me jump and she thinks it's really fun and wants to do it again