Should I give up or not?

There is this guy who I've know for 4 years now and we would see each other every week for sports but really didn't talk that much (but enough to say hi if we ran into each other) I had a crush in him then and then we split up and haven't talked to each other in a year and we just started texting again but he sometimes won't answer me or we only talk for a short time (we've been texting for like 6 months now) he plays on two different basketball and is always playing but I can't belive he doesn't have time to say hi at least I keep telling myself that he doesn't answer me bc he focused on sports but is it that or does he not know how to tell me he doesn't like me or will I just always have a crush on him

Should I give up or not?
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