help what do i do

My bf and i are long distance. We facetime and he always ask to see my body. While i hate it it used to be funny but that turns into the whole convo of him begging until i give in. Im done giving in just to shut him up. Im human i dont feel sexy 100% and i find it so weird to be in front of a computer naked. He has pictures Well i dont want to do this and just dont feel like it. He keeps begging me to show him and says how im supposed to. What do i do? Its complicated cause its long distance if i didnt want to in person he would have to respect that.