I M16 think my gf F16 is texting other guys and is cheating on me

r/

Hello this my first post because i genuinely want help from reddit and im desperate.

I am M16 and she is F16 i am really struggling to not think about my girl texting someone else because she is very careful with her phone and in the past she said she used to delete a lot of text and she joked she had 4 bodies.

She showed me like 3 different ways to sneak in her house without her parents and this raised so many questions and trust issues.

I really love her but should i check her phone when she is not around or not do anything?

Note: she was in a relationship but got cheated on and she persuaded him after being blocked. She also has this guy friend that’s is really close with and he told me all her past and she used to date older guys to get money or to teach her friend a lesson like “how would you feel if i did this”

She also took a pick of another guy on the street to send it to her friend as a joke but can you guys tell me if i should overreact for that?

TL;DR: i love her so much and i don’t know what to do