I'm expecting to be shot down in flames here... basically, DP and I have been together 9 months and we're happy. I'm the happiest I've ever been after two awful LT relationships. DP split with his ex a year and a half ago and they have a 3 year old DD.
Firstly, I appreciate that they must have daily contact regarding the care of their DD and I have no problems with that. Something happened last week that she wanted my DP's advice for (not regarding their DD). Since then they've been in constant and I mean constant contact. They've always messaged at what I'd say inappropriate times (when we're out for drinks/dinner/at a show) he'll reply to her instantly - even when it's not regarding their DD. Again, if it was I'd have no problems!
I went out to get breakfast for us the other day, came back and he's messaging her. Usually he tells me what they talk about or will say X has called/messaged.
I'm a very untrusting person in general and have been cheated on before (please don't say you don't trust him, the relationships done) it isn't. If I had that mindset I'd be single forever as I struggle to trust anyone!
Feel free to tell me I shouldn't say anything and I'm being a massive twat 