What should I do about my painful breakup and emotions?

My boyfriend and I, both working professionals, started with me ignoring his proposal. He is a founding engineer. After supporting him through tough times, we spent time together and eventually confessed our feelings. He promised commitment after telling his family. But after we became intimate, he began mistreating me. I even got a false positive pregnancy test, and his reaction was hurtful, accusing me. Though he later apologized, he still broke up. For two months, I’ve been suffering. He’s sharing my bad moments with others, despite knowing my true character. I’m considering going with my dad to talk to his family in Jaipur. I’ve had suicidal thoughts due to this situation, and though he says we’re together, I feel he’s seeing someone else. I want us to be back happy, peace, love forever. What should I do?