My boyfriend always laughs at meWatch
If you have a terminal illness, maybe not so much.
Is he able to laugh at his own mishaps? If so, he's not so much laughing at you, he's laughing with you.
There's nothing wrong with enjoying slapstick humour. Such as Laurel and Hardy moving a piano.
If on the other hand this is all part of an attitude that he has where thinks he's OK and you're not OK, then dump him ASAP.