I knew something was not right, just had a suspicion, so I checked DP's phone.
He has been messaging a woman he met 3 years ago since January this year. He initiated contact to get back in touch. Since February, he has been seeing her twice a month it seems when I am at work. We don't live together. They send each other crude messages about sex and about him 'filling' her up. They are not using condoms and she had a pregnancy scare from what I can see from the messages.