<human>: Can you summarize the given text in a few sentences?

I have been married with my wife for going on 6 years. Last night though I did something I never do, and never wanted to do. I looked through my wifes texts last night. Let me give some backround info, my wife has a very stressful job, and until just a few weeks ago has really hated it, but has stuck with it to help me get through engineering school. Lately though she has been much happier with it. She is hanging out with people from work and no longer wants to up and quit (as much). 

My wife has always been slightly controlling, it's been hard to convince her to be ok with me spending time away from her for my hobbies (mountain biking). She is ok with a few hours here and there but not much more. And a rarely if ever go out with friends which don't involve her, which I'm ok with because she is awesome to be around. 

Recently though, she has been a lot cooler about me doing my own thing, something I've been trying to get her more open too for a long time. I'm happy she is doing more for herself too. Frankly, it makes me suspicious, and I really hate that. But I have been telling myself that it's just her finally starting to find herself. 

The last week or so I have noticed a guy from her work texting her a lot. Someone she has rarely, if ever, told me anything about. Last night it became to much and I checked her texts. I feel terrible for doing it. It tore me up though when I saw them flirting, nothing crazy, but you can tell they have feelings for each other. They haven't discussed anything sexual, but for all I know texts have been deleted. 

Should I confront her about it? I'm a nervous wreck thinking she might have feelings for this guy. I just want her to be happy, even if it's not with me... I'm worried bringing this up is going to send her back into hating her job again and mess up her career... What should I do

I'm so scared that I'm over reacting and this is going to have terrible consequences..
<bot>: My wife has been happier than I've seen her in a while and I'm scared it's just because she has feelings for a guy she works with.