what did he mean

so i have this guy friend and i always hang at his house with him and it’s fun and we’re pretty close and can talk about personal things. he has a girlfriend they’ve been dating for 7 months. then the other day he asked if he could send a dick pic “for my opinion because he doesn’t know if his girlfriend thinks it’s big and looks okay”. so he sent one and whatever. do u think he sent one because he actually wanted my opinion and that’s it? or was he doing it to actually show me and “flirt” or whatever.