I found out my girlfriend lied to me so many times

Today I opened the chats of my girlfriend with her bsf, usually I don't but today I just scrolled a bit and found signs of her previous 4-5 relationship(She told me she only has one before). She had just broken up with a guy 3-4 days before our relationship(she told me she been single from a year).

so I guess she was talking to me late night while she was in a relationship. she deleted all the chats with her previous boyfriends but still follow them.

She be so innocent I never doubted her, but now what even shall I do.

Although there are no signs of her cheating on me after we are dating that is cuz I have her account, maybe she is cheating who knows, at this point I hv no trust in her at all.