Guys, how long are you into a girl?

Long story short there is a guy I like who I am almost sure likes me back from the way he acts, however I think he is really shy around me ( he blushes and avoids eye contact at all costs) and I am pretty shy myself so during the couple months of seeing each other once a week at an outdoor activity we only spoke once briefly ( where we said our names and stuff). Point is my country will be back in lockdown this week and we won't be able to see each other again for who knows how long so my question is will his crush fade during quarantine? I always assumed guys need to see their crushes for it to keep going but now a lot of time will pass. Should I be worried?
Guys, how long are you into a girl?
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