Busy boyfriend...

I am dating an ambitious, driven 38 yo man who's never married. I have two kids and was a stay at home mom before my divorce. My bf is very busy with work and is a director on a board which adds lots of meetings and dinners to his schedule. We want to get married but I am so afraid he will be too busy to have time for a family and/or get too stressed out in the process. Does anyone have any experience with men like this? 
P.s. He's been gone for two weeks and is coming home tomorrow and he made meetings for other people knowing I'm at his place only for the weekend. That really threw me for a loop.