Here goes.. I'm prepared to be told I'm stupid and only thing to do is end it. 
Been dating a guy for 7 months now, no label on it yet but to me we're pretty much together. Tonight he fell asleep and I've gone through his phone without him knowing (call me a pyscho haha) because I had a feeling there was something he was hiding. Long story short, he's been messaging a fair few other girls (some quite explicit). I'm absolutely head over heals for this man. He also admitted there were feelings on his side too recently. My question is to my fellow mumsnetters how on earth do I check where I stand or what we are without him knowing I've totally invaded is privacy??