Not comfortable taking pictures??

Catalina
So I know this might be silly, but I feel like when I take selfish I look awesome but when it comes to taking pictures with my fiance is so hard? I just don't feel like I look good.. I had 3 other relationships 2 of them were like 2 years long. And we only took like 3 pictures in all the time.. So I'm not used to taking pictures with guys lol help?