Be very patient and gentle around them, no sudden movements, absolutely no trying to grab then at this stage, not even reaching out with your hand.
Set them free in your room or wherever you are after coming from college. Just let them be in the same room as you, and go on with your daily tasks. They will realize, with time, that you are not a threat and will become more relaxed when around you.
Talk to them with a soft voice from a distance, that will help a lot. After some time, maybe a week or two, you can try to come close to them, veeeery slowly, and as soon as you see them becoming uneasy, stop right there and go back. Repeat several times a day and proggressively you will be succeeding in coming closer to them. That's my experience with my very own first lovebird. I've had it for around 2 months now, and it still won't jump on my finger or let me grab him. Patience is key!
One neat trick I found out though, is that sometimes its your hand itself the thing they are scared, not of you. I managed to make my bird jump onto an upside down clothes hanger that I'm holding, that's progress! He seemed very relaxed and even cheerful when I do that, I can put it close to me and talk to him, which is a good thing.
Try that first, grab a hanger and move around with them on it, they will build trust that way (I've had mine land on my hand two or three times at most).
Its all patience, please don't give up! They might not have been handled gently while at the pet shop. You might have to work a bit harder cause you got a pair, but hang in there!
http://imgur.com/a/uT0oz