A little back story: me and my partner have been together for 4 years, 2 girls, a home, a happy life...so i thought. When i was pregnant with our second i found out he was trying to meet another woman, i confronted him we decided to work through it. 2 weeks later i found messages on his phone with a female colleague (much younger than him) inappropriately talking, i suppose 'sexting'. I once again confronted him, he said it was all talk and banter nothing happened. I was 7 months pregnant and as you can imagine i felt very vulnerable, i said it was over..however he managed to persuade me to stay one last time.
Here we are 1 year down the line, and last night was the first time i felt something a little off since that situation. The last few days hes been going for runs, only about 30 minutes. He went out last night, a little later than normal, it was longer too. So i checked on the 'find my phone' and saw he was where he said he would run too, but was stationery for a pretty long time. So i phoned him...didnt answer, but phoned back straight away and was walking? He said he stopped because his knee was hurting and was watching some kids jump in the river (it was dark out). He gets home, and hes acting odd, i said why didnt you answer first time? He goes on to say he was taking his shoe off because he has a blister...but when he phoned me back within seconds of missing my call he was already walking? Almost like he started moving because i phoned?
Anyway he assumes im assuming the worst and his reply is 'just spit it out, i know what you're thinking, just accusing me...' (i didnt even mention anything, i just asked why he didn't answer) and says i will pack my stuff, i will pay the rent etc. its like he just goes off on a tangent and throws out i want him to leave? Its so confusing!
So my question is, am i overreacting? Or his he up to no good once more?
P.s i promised myself after pregnancy that if it was to ever happen again, i will be leaving, no hesitation!