What are 2 ways for a girl to get prego ?

There are a few different ways this can happen. The most common way people get pregnant is from intercourse  Another way to get pregnant without having intercourse is by having a procedure called: IVF (In vitro fertilization)

Explanation:

sex is when a male and female has intercourse (sexual)

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.