18/M never had a GF so I'm just wondering what it is exactly

http://i.imgur.com/zocRu.jpg (on the left) http://i.imgur.com/6EiaZ.jpg (the guy) http://i.imgur.com/2UNtG.jpg (Taken a few months ago) http://imgur.com/Wm9zZ (Just taken with a shitty cam) I know I'm a bit overweight but I'm just wonder if its anything besides that, or maybe just a shitty personality...