Ex-boyfriend called and texted but didn't return.

He answered the phone but didn't speak, and it took him a long time to tell the reason. Maybe he was too excited to control his emotions, so it took him a long time to talk to you.

The ex-boyfriend who broke up for several years can send you messages and make phone calls, which means that he may not forget you and want to get back together with you, so he will send you messages and make phone calls.

If you still have feelings for him, you can chat with him more and deepen our feelings. If you don't have feelings for him, don't give him hope, so as not to cause his misunderstanding.