Wouldn't life be easier if you and the bf/gf were friends with the ex?
I have heard of people complaining because of the drama with the ex and this is the first time I have heard people complaining about the ex being friends.
Your SO prolly shouldnt be talking to the ex everyday, especially when it takes time from you but I think life would be easier with the ex being friendly. Maybe you can talk to your SO about this and how you feel about him/her talking to the ex everyday and how it makes you feel uncomfortable but do not demand he/she stops talking to them because that will only cause animosity.
Wantobstronger - Does your bf work? If he does, why can he not help out with the bills? He is living with you and that should definitely take priority. You didn't give us any info about that.
There is another free dating site called Plenty of Fish