Friendships will require a common sense approach. Someone is romantically interested in you, but you do not necessarily feel the same way.
The path that you must take is before you. There are no signs, no passers by to advise you, and not much else to help you but your own intuition and the facts that you have gathered. We all find ourselves in this situation at times, where the only other option is to turn back. Some things are destiny and some things are duty. Only you can decide if you're willing to roll up your sleeves and tackle this new challenge.
Don't get emotional, that's when battles turn nasty and things get ugly. Take the high ground by using facts, not feelings.