3x5 Squats - 231 lbs (PR)
3x5 Benchpress - 121 lbs (PR)
1x5 Deadlift - 110

Abs workout = Leg-hip raise (3x15), Crunch (4x15), Vertical Hip Raise (3x15)

I think a better way to state my question would be that... ok fine I'm gaining fat and my weight is going up as well, how do I know if that's muscle or not and whether I should adjust my diet or not, putting aside the "look-in-the-mirror" idea.