This can only mean two things.
Either your boyfriend was scrolling on his phone because he was bored (come on, who doesn’t do this) and wants to send it to you to make you smile or he misses you and wants to know if you feel the same.
If you have feelings for him, this will be adorably cute, but if you don’t, then it’s borderline creepy.
An old boyfriend scrolling down his phone looking at your photos? Okay…creepy.