Most Helpful Guy
If I were him i'd want you to know:
He is absolutely n0t 'keeping you around' as backup. That'd be selfish and rude. He just really enjoys being with you and being your friend. For now he ís fine with that and I hope you're too. Dont worry be happy. Srsly.
And maybe, one thing will lead to the other in the future and ur together anyways. Who knows. Just go with it.
Look: He knows you like him, but doesn't want to ruin the friendship. That would suck for both of you. So he "friendzones" you (god I HATE that word. It sounds so negative, but it is not at all if you think about it)