Annika,
Someone once told me that when we are at a crossroad, there is a path of love and a path of fear. If we choose the path of fear, we will have regret and pain. If we choose the path of love, we may have regret, we may have pain, but we might have love.
Its a little concerning the “fast hard fall”, because often that is from relief at not being alone any more and sexual desire, rather than love. Be kind to yourself, take it slow. If he and you have a mutual interest, perhaps it will sustain for a short term long distance thing. What my heart intuits is you can either give it a shot and take the risk of pain later, or cut the relationship down and experience pain now.
Either way, consider that love is something we find within and share outward. It isn’t the attraction to an outside being.
With warmth,
Matt