What ever relationship she was in probably has become a habit with her and she just continued with it. May be she was too focussed on her career all these years and didn't have time to think about her relationship. She may have gone along with him all these years.
Her tenure in BB must have made her think about herself and her priorities in life. In BB there is nothing but you and a bunch of 10/12 people along with you. You can only survive in that house if you connect with another person.Not just to stay in the game for the sake of your own sanity.
May be her stay in the house altered her perception of relationship and her expectations from it.
She may be serious about Asim but don't really know if Asim is really ready to settle down.He has a long way to go before he establish himself. Will he be able to give her the attention and care that she wants?
At present it does look like their feelings for each other are real and not part of the game.