My relationship is in the edge, September till now.. we always fight because his getting close to a female co worker.. he told me everything and he assure me she’s just a friend but the only thing I don’t get it if she’s just a friend why do they need to plan about where to park, time to have breaks lunch and walk to the parking lot after work.. and addition to that they txt each other if something remind them of something .. it bothers me and it pains me.. I’ve been crying since September telling him why does he do this if she’s just a friend.. he never txt me too .. in almost 6 years we’ve been he never been extra with me like that.. unless I ask .. I’m i trippin ? Please advice me

Ps. After dropping me off at work he visit her at her work and stop by he said just to say hi, because his in the area..