Am I to heavy to do this?

Wouldn't it be better to ask him this? He's the one 你 want to sit on after all.

115 lbs. isn't really heavy though, but it also depends on your boyfriend will feel. o.O

I would think he wouldn't have a problem with 你 sitting in his lap, but 你 know it's really up to him to let 你 know if he's uncomfortable, 或者 help position 你 so that it's 更多 comfortable.

If your hot im sure it wont be an issue. 115 is a good wieght for a girl