I’m going to leave my husband

He’s cheated since 2 weeks into our marriage and has had other cheating instances since. We are coming up on two years of marriage and he was caught messaging his coworker whom I’ve told I don’t feel comfortable with him talking to because of her flirtatious nature with him. He fought me on deleting her and building trust with him. He’s arguing and gaslighting everything that I’ve stated in my concerns but he claims to be a great husband based on what he’s done for me. I’m so done. I’m at least 1,000 miles away from any family but I have great friends and his sister has told me that it isn’t going to get better. I’ve been manipulated into thinking he’s done nothing wrong and I am wrong for thinking he’s cheating when there is evidence. Advice please?