Boyfriend Cheated during prep

[Bequain]

Hey guys, first time posting. Im 23 yo and Ive recently been working hard over tha past year or so for my first bodybuilding competition, specifically figure and physique. My ex was powerlifting very unsuccessfully (he gives up at any signs of failure). He was 220 lbs with 1330 totals and refused to compete til he hit 1350 and hurt himself in the process. I on the other hand started around 208 lbs and have put on a lot of muscle mass and it really shows now that Ive cut to 158 as of today. Do you guys think that because I was doing better off that he wanted to find someone else? Literally nothing seemed to be going wrong until my lines started showing. I was yo-yoing in weight for months until January this year. Ive been cutting for over 16 weeks, but I dont get irritable or anything somehow (Im also still around 20% bf). He stopped letting me come to the gym with him and literally went for the girl at the gym that sleeps with everyone for about a month before I broke up with him for other reasons, of which I wouldnt have noticed if we hadnt been spending time together. Does this happen often? Like not exactly but can guys feel emasculated like that and just leave? Idk im just at a lost and cant get any answers. *He is 30 and the new girl is 40*

[mavd]

He cheated because he wanted to. It's not your fault and there is nothing you can or should do to fix yourself as a result.

[ANIMALISTIKZ]

cope

[anandagirl]

He cheated because he wanted to. It's not your fault and there is nothing you can or should do to fix yourself as a result.

This. Consider yourself lucky. If he felt emasculated, that's because he has low self esteem, and it's not your job to fix him.

[Cavalerium]

**** happens. Don't worry. Too much weight could take effect on it, but not huge.

[KFITIN]

I know it's not an ideal situation and timing, but it seems like he obviously felt intimidated.
Be happy he went for someone he feels is on his level.
You go girl and good luck for the competition!

[maeva27]

This. Consider yourself lucky. If he felt emasculated, that's because he has low self esteem, and it's not your job to fix him.

This 200%.
And you ask if it happens often? Well, I guess sure, cheating happens quite often, all the time really, for various reasons, contest prep or not... So is contest prep a valid reason? I think not.

Don't question yourself, you did nothing wrong and there is nothing you could have done differently.