I would like to know if there’s any need for ghusl e janabat for the excretion during romance with husband? Or trying to convince him and end up without intercourse. And also if we end up on foreplay?

If you are sure that you didn't reach orgasms and there was no discharge than there is no need of ghusl. Incase you felt that you had reached the climax, then you need to perform ghusl of Junub