3. He wants to forget about his ex-girlfriend by overwriting his memory
Generally speaking, men are thought to dwell more on breakups than women. Some guys purposely take their new girlfriends to places they used to go with their ex-girlfriends, because they haven’t been able to get over their ex. If you catch your boyfriend gazing into the distance and if he appears lost in thought, this could be the reason. If you think your boyfriend might be feeling this way, give him a gentle hug and give him some new, happier experiences to replace his memories with his ex.