Miesha strikes me as the type who, when she wants to fuck another guy, she breaks up with her boyfriend to keep her conscience clear. So this how everything played out:
1) Realizes she wants to bang this other guy.
2) Breaks up with Bryan.
3) Gets railed by the other guy for two weeks.
4) Gets her ass kicked by Amanda.
5) Promptly retires.
6) Continues getting railed by this other guy on the down-low.
7) Slowly breaks it to Bryan that she just started dating this other guy.
8) Continues getting railed by this other guy, now with certain gym members knowing.
9) Pretends publicly that she wants her relationship private, when really she just doesn't want anyone looking into the timeline.
10) Reveals pregnancy.
Good job, Miesha, you pulled it off.