Is 11a too young age to let boys touch me?

im 11 and my best friend is 12 and hes a boy. we like chat, laugh, and compliment but we compliment each other in sexual ways. Some days he comes over and i pose naked iin my bedroom while he takes photos, and when were bored he plays a little with my private parts and licks them and stuff and he makes me play with his private part. We dont go out though. He tells me how to look sexier in a way. but i dont know if i should still do this, but i enjoy myself, and i dont want to upset him! Please what should i do?