I'm 21 he's 35 ... is 13 years age gap too much?

Anonymous
I work at a small shop, and this customer would always be very friendly, and I thought that was that. He just admitted to me recently that he has had a crush on me for about a year, and that he really likes me. I've actually liked him for a long time as well, and we just recently found out each others ages. If I was asked is 13 years age gap too much 2 days ago, I would reply for sure it is! - but it is a completely different story if the situation is happening to you! He's a really nice guy, and I want to give him a chance, but the age gap is worrying me. An added note is that, I'm waiting for marriage for sex, so that's not an issue for me - because if he wants it he is not getting it LoL. My issue is just giving him a chance, or going on a date ... should I or shant I?
Updates
+1 y
UPDATE! --> so I chatted with him for a bit on the phone, but was not really feeling a connection, and so I just told him I don't like him in that way. Might be a bit awkward if he stops by the shop, but I think I can handle it =P
I'm 21 he's 35 ... is 13 years age gap too much?
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