Whats wrong with my boyfriend?

i am 43 he is 50. we have been together for a about a year. in the beginning he was caught red handed cheating via texts as well as several dates. that i was unaware of . since then he has not that i know of done anything questionable. we are living together etc. he said he realized all he wants is me. but he checks the house phone constantly to see who i talk to or call. he even accused me of having a secret phone number. he won't allow my sons friend to be dropped off by his father. because he says that man winked at me. i have never cheated. wanted anyone else. speak to anyone else. etc. i see my own family less and less. he even accused one of his best friends of calling me. not true. he asks me constantly do you love me. i can only reassure him so much. we go no where without each other. i can't imagine what the reprecussions would be. he would ask me a thousand times who i talked to. he is extremely jealous. at first i was flattered but this is getting crazy, its too much work explaining my every move to him. he also has become very controlling with money. like i said he has no reason not to trust me completely. i do love him. but his insecurities are exhausting me. how can i get him to stop. any help with this is appreciated. part of me wants to just run. but i love him. and the rest of our relationship is great. i could see myself marrying him. if he would only quit this nonsense. he accuses me of wanting or knowing several not too desireable men. men i would not even speak to let alone date. yuck. to me that shows he even has no idea what kind of man would attract me. my boyfriend has many great qualities. and no reason to be insecure. he is handsome, fun, has a stable career etc. i have never seen a grown man act like this. i feel like i am in 8th grade again. he has been married twice before , the last time for 16 years. his ex was very overweight, not that should matter. but maybe he felt like she was safe. in the respect that men weren't going to knock down the door. i don't know i can't make sense of this. but i can't take much more. i thought he was the man of my dreams but he keeps trying to find fault in what i do. but i do nothing to disrespect him. in anyway. HELP I AM READY TO CALL IT QUITS.