Consider the source...his brain has holes in it like a sponge. He had an excuse to text you. They will find excuses to communicate w/you and yes, it can be annoying at times, especially when he's already be in contact w/your daughters.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.