If he still won’t commit after 2.5 years long-distance, should I walk away?

I’ve been talking to a guy for 2 1/2 years, he's in the military & lives across the country. If he's hesitant about a relationship after this long, is distance an excuse? Should I walk away or set a boundary?

Walk away
Set a boundary
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If he still won’t commit after 2.5 years long-distance, should I walk away?
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