Bathtimebabe - I'm in Devon too......
My ex was only interested in his ds when he thought there was a chance with me, I did get back with him, and it failed, but I'm pleased to say I got my gorgeous dd out of it( hope that doesn't sound too selfish?).
He was always a 'good' father till we split up a 2nd time, when he put me through hell re solicitors, access etc., then thankfully he met someone else, I started a new relationship 18mths ago, and I'm getting married in this July!!!!
Ex has never paid any interest in DD, not paid money since last may, and not seen DS since last August. ( he also now has new baby )
Believe me they do not change....
I was a single mum for 3.5 years, and it was great, (actually sometimes it was easier), and now I am the happiest yet......and my kids have a wonderful new family who love them unconditionally....... It can happen!!!!