Is he ignoring me on purpose?

So I know this guy and we have been acquaintances for 3 years now. Well we took it to the next step and slept together this past weekend. I texted him later that same weekend and he responded by flirting and everything was fine. So I texted him on Monday and it is now weds. no response. On a side note he has a kid and he his with him during the week and he told me before "sorry if I can't respond to your texts all the time I might be busy/" I don't want to seem psycho. Should I text him this weekend and just say hi or should I wait and pray he texts me back? I could use a little help.
Is he ignoring me on purpose?
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