Help Me Please

Hi Ladies, I Need Help, I Was In A Terrible Break Up A 3 Ago With A Guy. We Planned Marriage, I Thought He Loved Me.....Until One Day He Said The Two Words.....I Cried To Jesus That’s How Bad It Hurt Me...... So I Met This Other Guy After 2 Years Of Beginning Alone. We’ve Been Dating For Almost 10months He’s Really Cool, But In The Beginning He Cheated Like The First Month. I Took Him Back, But Now My Heart Can’t Seen To Love Him. My Heart Is Still Broke From The Past...... I Told Him I Can’t Love Him Idky But I Can’t So He Started Crying, He’s A Little Mental, So Sweet. The Kindest Person. He Told Me He Didn’t Want To Lose Me, That He’ll Put Himself Into Danger For Me..... And Himself I Leave. But The Point Is Idk If I Should Stay, Every Time We Get Into A Discussion He’ll Ask Me Or Think I’m About To Leave Him...... But He’s Protective Over Me, He Say He Want Us To Get Married Before He Goes Into The Military And He Don’t Want Me To Leave Him. Ladies These Are Just Pointers Should I Stay And Love Him? Or Is He Playing Me Like A Dumbass?