Im confused..

Me and my OH have been together for 5 years now, i love him so much hes my everything weve been through thick and thin together, things most couples would never get through.
I look at my OH and i sometimes wonder do i love him or love the fact im with him if you get me. Weve been through so much i wonder sometimes how to make it better. I dont feel attracted to him anymore but i love him. I find he annoys me much more than he used to, dunno if thats just weve grown up differently.
Thing is weve got a new guy at work that has caught my eye. id never cheat on my OH because im not like that but he makes me laugh, and im attracted to him and i wonder where its gone with my OH.. This guy is forever flirting with me, i dunno if i like it just because it makes a change or if its telling me something the way im feeling

What can i do.

Two issues

Right indeed we all like to flirt or be flirted with but that is because we have the safety and security of Work. In fact that is how we know each other and people that are fun to be at work with are often very different once within their own environment. Were you to pursue this office relationship 'what would you talk about all the time'. You must not read into this anything more than it is, the guy is comfortable with you and he maybe is not going to give up his life to date you?

Your BF you need to tell him what you have told us even if you have to resort to showing him this 'thread'. Then discuss the situation. At the risk of being boring which I am practised in you relationship has hit a flat spot and it may be time to appraise just where you are and where you are going. That goes for both of you? Take a weekend day away at the seaside and make clear before you go with BF that you both need deep and meaningful conversation about our future or lack of it.

Be brave as you have been here, if nothing is left then lets bring it to a close before we end up hating each other and the split all ends in tears. If you do not you will end feeling he is like a brother to you. What you have not mentioned is if your sex life is affected or worse as that will also give you a clue as to the outcome?

Sorry to be a little serious and maybe say things you may not wish to acknowledge. Please sort this out by the weekend! Best of luck!