Anyone have an answer

So this guy and I are in love. We’ve been together for some time. The problem? Well texting and Snapchat. I know he’s been on his phone because it will tell me “on 2min ago” and I would have sent him a snap like 10 mins ago. This isn’t the only guy that’s done this and I know other girls who have this problem? Like I know he’s home... why would he not be opening my snaps?