Dear Yash, we shall be pretty honest with you. We are sure you know that the seats are allotted based on the counselling process. The merit list is prepared on the basis of your score and Category. Now when there is a tie breaking situation, sectional marks, age and other factors are also taken into consideration to give a particular rank to a particular Candidate. Now for you and your fiancee to get a seat in the same college, both of you should have the same score more or less or the other way is to select the same colleges during choice filling. While this is just a suggestion and not a guarantee that things might work in your favour, this might help.