You may not understand the dynamic until you live it. You will see from posts on other threads that a boyfriend may hyperfocus during courtship, then retreat to his little world later. Reading is good, but I find many books give unrealistic scenarios and offer glib advice. How patient can you remain if you’ve been stood up hundreds of times and if your boyfriend screams at you if you ask, no matter how patiently and mildly, what happened? It may be very instructive to observe his behaviors among family and friends. Don’t expect it will be different with you or that you’ll handle things better based on advice you read.
All the best,