I've been with my partner for 8 years and married to her for 5 of those. She's done a lot for me over those years for which I am extremely grateful and I think the world of her but lately we've been arguing a lot, mainly over the future and mundane things, and I'm starting to question my happiness. However, lately I've got friendly with a woman at work and I've started having feelings for her - they just came out of the blue and as much as I want to let them go I can't. We're in the same team at work and sit opposite each other so it's not like I can avoid her. Besides, we've been getting quite close lately, and she makes me look forward to going to work. She's single and shares my passion for going out running so we sometimes go out running together (usually with others though) and I love spending time with her, although I tell her about my wife and home life to try and lay down the boundary lines. I haven't felt this way about anyone for a long time, and know deep down it's definitely more of a heartfelt thing rather than a sexual thing. I care deeply about her and want her to be happy, but at the same time I want my wife to be happy too. I'm hoping that this is just a passing crush, and right now I'm going to have to give everything to my marriage, I owe that to my wife at the very least. I'm not a horrible person, I love my wife and want her to be happy, and I hate what these feelings are doing to me. If anything was to come of this, I'd like to think that I would be honest and up front with my wife about my feelings - she really does deserve the best, and if this continues I don't think I'll be able to give her that, which breaks my heart. At the end of the day though, not only do I need to be honest with others, I need to be honest with myself.