Positions other than missionary

Eve

Hi guys, so whenever me and my boyfriend have sex, we can only do it in missionary, becauss he says whenever i try to be on top that it feels like i will break his dick, and we have tried a few different ways but we can never seem to get any to work, but i hate missionary as my legs always kill and tbh i dont really get much pleasure from it. So i was just wondering if anyone had any different positions to try?