Why are you living with this 26 year old man after only 6 months?
This sounds like a relationship of an older person using a younger one.
If you are afraid to stand up for yourself in an obvious abuse of privacy, this relationship spells dysfunction.

Well if your worried about anything, have someone else standing in a room closeby. But he is proberly feel pretty ashamed.

Leave him you don't seem to be very happy with him or maybe just let him take a pic does it really hurt I'm sure many other guys still have pictures of you its not like you're a shy person