I usually only get to watch it on Fridays so can only assume you mean Karen's(?) questioning during their little dinner party? I think it's natural for some people to be curious about their workmates' private lives. Think I'd be a bit concerned about if my colleagues started asking about my love life, though, given that I work in an almost totally male team (who seem to discuss their kids more than anything anyway). A particular (male) colleague and I do discuss some family issues though, largely because we've had similar experiences in the past and are able to share the problems.
Must admit, I do like the idea of Mrs Tembe and the vicar as an item. She's a bl**dy nuisance at work but has a lovely heart and he found it the day he arrived at the church.