<human>: My boyfriend works a long job that gives him a lot of free time so one day, he decided to text his ex from two years ago (they dated about a year, broke up, got back together, broke up for good). 

However, what I do feel somewhat peeved about is that they text A LOT. When he's at work, they text. When he comes home and we're eating the dinner I cook, she texts him. If we're lounging around and watching a movie/occupying our time together, he's mostly respectful and keeps his attention to me. But as soon as I look away and huddle into my own corner to go on my laptop/do my own thing, he texts away.

I'm not a nosy girlfriend, nor do I like to place limits on what my boyfriend can or cannot do, but lately, we've been arguing. One day, both of us were having particularly bad days and I wasn't being 'supportive' to his bad day when he told me about it. Then ensued a big argument and he made a remark about how when he texts his own girlfriend (me), he gets a lukewarm response at best but when he texts other girls (namely his ex) and tells them about his bad day, they make him feel better and are able to comfort him better than I can. 

Obviously, this makes me feel insecure when he's blatantly comparing me to his ex and telling me she completes girlfriend duties better than me.

He's not secretive about texting her, but I think he even realizes how awkward it is when we're sitting on opposite sounds of the room and his phone is buzzing every few minutes by the same girl. 

Right now, I'm visiting my cousin in the city and I'm 1000% sure they're still texting away. There's nothing objectively wrong with texting an ex from two years ago but Christ, I haven't seen anyone text anyone this much since middle school.

Provide a brief overview of the text.
<bot>: Is it suspicious that my boyfriend has been relentlessly texting his ex (this started before we got into a huge argument), or should I let it go until I have actual reasons to believe it's beyond platonic?