Why is my ex-boyfriend acting like this and should I try to help him?

My ex-boyfriend and I first started dating in November of 2006. We had a rocky relationship and dated on and off until we broke up in May of 2010, when we were nearing the end of 11th grade. He’s a year older than I am, but was held back a year in elementary school. Our problems first started when he wanted me to put out in 9th grade, and I told him no. He still wanted sex and began cheating on me with another girl. I found out in 10th grade and broke up with him the first time and he began dating her. I gave him an ultimatum and he went back to me. We broke up in 11th grade because I felt like we were growing apart, we couldn’t get past our problems, and he wasn’t trying like he used to.

That summer and senior year went by slowly. I dated other guys for awhile until I decided I needed to take some me time. He got drunk often, spent a lot of time high, partied a lot, skipped school, and got into a couple run-ins with the law. He was arrested for things like trespassing and shoplifting. He skipped school so often that his GPA dropped and they wouldn’t let him graduate. He dropped out.

I felt guilty all that year because I felt like he was angry at me and that was why he was doing all of this. He did stupid stuff before I met him and while we were together, but it didn’t get horribly bad until we broke up.

After I graduated, I went to school out of state and lived on campus for a year. I deactivated my Facebook and therefore had no way of knowing what was going on in his life. I transferred to a school closer to home so that I could commute for financial reasons. I reactivated my Facebook and looked at the posts that were on my Home.

I was horrified when I found out that my ex-boyfriend was still partying and drinking like crazy. He got a huge Bruin’s logo tattoo on his bicep and pierced his eyebrow. He can’t hold a job and in the past two years, has gone from working at a clothing store, to a restaurant, to Dunkin Donuts, to Wendy’s, and now he’s at Panera. Apparently, he had been taking classes in hopes of becoming an E.M.T., but he stopped. He posts nothing but stuff about the Bruin’s, how badly work sucks, alcohol/drug related stuff, how badly the cops suck, and fight related posts. My friend (she has him added) says he has not been in a relationship since we broke up. He turned 21 in April and 11 days later, he was arrested for providing two minors with alcohol. Less than a month later, he got arrested for drunk driving.

He’s still posting bad statuses and doing dumb things and I’m worried about him! I’m hoping his behavior isn’t still related to our breakup. I don’t think a relationship will work out between he and I, but I still care about him. I don’t want him to destroy his life doing stupid things.

Do you think his behavior is related to our breakup even when it’s been over 3 years since we ended our relationship? Do you think I should contact him? Do you think he’d listen if I tried to talk sense into him?