Dear vidalevi:
With your mindset of looking for evidence that the next person in your life is not turstworthy, I would suggest that you focus not on getting into an exclusive relationship with this new guy or any other but on developing a friendship with this guy- and with others, if you’d like. Shooting for a romantic relationship at this point, when you are hyperfocused on suspicion is not a good beginning. If you decide on, let’s say, 3 months of friendship only BEFORE you consider a bf/gf relationship with this guy, then you have 3 months of not having to be suspicious of him. During the three months you will be able to learn about him, to enjoy some closeness, learning about yourself even, in the context of friendship. Then, after three or however long you decide, after that- figure it out and maybe take it to the next level.
anita