Do not fear the unvarnished truth. Especially when considering or being in a committed relationship. Sugar coating gets you off easier, but only temporarily. Telling it like it is, however, will make it easier to live with yourself and better for the other person in the long run.
I live by this. Wallow in your sorrows for one 24 hour period. Cry. Lay around in your comfy clothes. Watch junk TV. Eat junk food. Sleep. Then the next morning start taking steps to dig out of that dark place. Take a shower. Eat right. Exercise. Do something to move forward. It's ok to break down but it isn't ok to stay that way.