With Uranus governing your 5th H of love, it is not surprising that there can be some unpredictability and sudden upsets in love. Your 7th H of 'others' is Aries, ruled by Mars posited in the 12th. You are prone to attracting rather aggressive types who can turn out to be quite controlling and domineering; with Mars sequestered in the 12th, hidden secrecy / enmity can enter into the picture of relationships.
You really need to consider your true feelings about this individual. Why would you hesitate in taking this action? What keeps you wanting to be attached to him? Perhaps it is about the fear of being alone? Your Moon in Cancer often carries insecurity within, because you need to feel protected and nurtured.
Is he the type to really provide these things for you? Your Venus conjunct Pluto can be disruptive to relationships as well.
Life is really about making decisions [choices] and being willing to address the consequences after the fact. You really need to look within to find the answers you seek. Rather than being concerned about what he might do, or not do, for you, try to focus on becoming more aware of your true needs, desires and expectations in relationships. Astrology offers you potentials but holds no guarantees about the good and bad that may accompany your choices.
A synastry chart can provide more insights, however it is not reliable enough if the birth time is not accurate.
