Hello, I'd like to help you with your question.
Whether or not you decide to let this relationship go depends very much on how much risk you want to take on this guy. He is giving you a warning up front that he is not able to deal well with relationships. That is a pretty clear sign that he is expecting to have your relationship not work out. And that leaves you vulnerable since you care very much for him and want the relationship to work.
Unless this guy is willing to work on the issues that are causing him to have trouble in relationships, he is not going to change. Only people who are willing to seek help with their issues change. And this guy may be aware he has issues with relationships, but if giving you a warning is all he is willing to do, then you may end up being with someone who has very little if any commitment to your relationship.
If you are concerned about your age and the time you have to form a commitment with someone, then this guy does not seem like the person to do that with, unless he is willing to address his problems. If he is, then the risk might be worth it because he shows he wants to be with you. But if all he is willing to do is give you a warning about his issues, then your time may be better spent finding someone who is willing to commit and does not have similar issues with relationships as this guy does.
I hope this has helped you,
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