Is it wrong to sext / date with my mums friends son who I was best friends with as toddlers (we are 22 now.) ?

I haven’t seen him since we where abouts 3-4 years old but we have been talking online the past week and we really get along I’ve visited his family around two years ago and I’m going to be visiting them the following to weeks where I’ll see him in person and I think he likes me and wants to date me

Is it wrong to sext / date with my mums friends son who I was best friends with as toddlers (we are 22 now.) ?
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