"I'm in an on-off relationship at the moment"

This quote from Cat Deeley suggests that she is presently in a relationship that is not stable. It implies that the relationship is not consistent and that it is going through periods of being together and then apart. This might imply that the couple is having trouble in their relationship which they are struggling to make it work. It could also indicate that the couple is taking a break from each other and that they are uncertain if they will return together. Whatever the case, it is clear that the relationship is not in a safe and steady place. This could be due to a variety of factors, such as absence of communication, trust issues, or just not being compatible. Whatever the cause, it is clear that Cat Deeley remains in an on-off relationship at the minute.