<human>: Can you succinctly summarize the text in 1-3 sentences?

I'm reposting this from r/teenrelationhips since it got no reply and I feel this subreddit may offer better advice.

Original post: 

So I haven't had the best luck in the past few years and have come to the conclusion that if I'd just shut up and failed to let my past relationships (and rejections) take place or turned people away I'd be a much happier person. I could have avoided slutty/cheating girlfriends, countless rejections, and some of the most worthless people I've ever met by doing so.

But some people have been telling me that ignoring my feelings as I do is only going to lead to severe regret later on in life and somewhere in this subreddit there's a comment or two that pretty much say the same. Am I truly hurting myself, somehow?
<bot>: My love life has been nothing but agony and I'm tired of pursuing romantic interests. Will I someday regret doing so?