I think Prem-Heer will be together, why I say this:
1. Both Harshad and Aditi have said in their interviews that this is an "INTENSE LOVE STORY"..now how could it be an intense love story if they are not together???coz the way they are potrayed in this series they wont cheat on their partners if they are with someone else. And Prem did say to heer that if she is with someone else then he will mudke bhi nahi dekhega...so again cant be intense then...thats why i think they will be together.
2. The banjaran said when prem confessed his love to heer that "ab duniya ko inke pyaar ke aage jukna hoga, unke pyaar ko samajana hoga, apnana hoga.Ab duniya ko unke rasamo ko todna hoga" now why would she say that if they were to be seperated???? its not as if she comes everytime and says silly things??? she told heer when she got engaged to madmeet that teri maang khun se bherege...means madmeet isnt the one you think he is...so i think they will be together.
3. That babaji told heer that,"tumara pyaar bagawat hoga, junoon hoga" means now prem will do bagawat with duniya and will break the rasams to be with his heer š š and thus they will be together..
4. Even Harshad kept saying its a hatke love story and his way of showing love is different. Now usual way of showing love is basically singing and wooing the girl here that is not the case but i think here he will cross the limit to be with heer and hence they will be together
5. Last but not the least the story tag itself says an immortal love that transcends all boundaries...so thy have to be together...
This is my take what do you think???