said he'd text but never did

I was talking to my crush on instagram and he said we'd talk later since he had to go. I decided to give him my number and he said he'd text me right away so that I would have his number, I had made a typo when writing my number so I resent the part  I screwed up. We've talked a bit on Instagram since but I don't know if he misunderstood or if he just didn't want to text me. What should I do? Should I ask him about it? Please help!