@ gattsuga,
We have met several times before this March for the last 3 years but never bothered to check either his text messages or his email (which i chanced upon because I don't know his password and he didn't sign out).
As i wrote in my first post, i checked his text message because he was messaging very late in the night when i was asleep (and when he should be too) and he just tried to avoid the issue in a suspicious way and said he was replying to his nephew (i didn't mention this part in the text). He kept repeating this story. Initially I thought that I was blaming him for nothing. So i had checked it again to confirm.
He does say that he will ask his ex to stop calling him and have already been avoiding her by saying that he is busy etc. and asked her to rebuild her relation with her husband, I don't know whether to believe him or not because the seductive messages were sent end of July and he said he didn't see it because messages don't appear all the time. Infact when I confronted him earlier this month after reading the messages, initially he confirmed that they were in touch but was surprised that such a seductive message was sent to him. Later he said he called his ex and asked why she sent such a message and she said it was wrong on her part to have sent it to her. Now all of this has been told by my bf and I don't know whether to believe him or not unless i talk to his ex. Now that will not be respecting him. So i feel helpless.