Problems with a shy guy who doesn't initiate things! HELP

so anyways I met this guy at a party where he asked me for my number after how alike we were. My friend talked to him and he seemed pretty interested in me. We text basically everyday and our convos our pretty flirty. The weird thing is he is a nice guy who as he admits has trouble having conversations with girls.

we hung out on friday with some friends and he was acting strange and nervous with me. I understand because it was the first time he saw me after the party. Also it makes me upset because he is not so good with initiating things he never texts me firsts or makes effort in asking to hang out. I know he really likes me and I like him too but if he doesn't make a move soon I feel as if I'm going to move on from him when really I don't! can anyone suggest any ideas that I can say or do to fix my situation with this guy?
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do you think I should wait until he texts me or should I just text him back?

im scared if I don't text him I will loose him.
Problems with a shy guy who doesn't initiate things! HELP
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