Bendy is not prone to ‘love’, as it were. For the most part he views those around him platonically, if not simply as a means to achieve his own ends.
In the event that he does start to fall for somebody, one of two reactions will occur. Either, he will attempt to ‘woo’ the individual in question, and really pull out all the stops to gain their attention/affection. Or alternatively, he will react angrily, and attempt to push whoever it is away before he becomes at too much of a disadvantage.
These two reactions are determined entirely subconsciously, and Bendy does not know what causes him to act differently towards different love interests. Surprisingly, it is the former which is more likely to happen, because the latter only occurs if he really cares about said individual.
This is due to the fact that, with someone he knows he could abandon if things started going south, he feels safer and more in control. He knows he won’t get hurt -either physically or emotionally- for their sake, resulting in him feeling that they are more favourable.
With someone he knows he would lay down his life for, however, he becomes afraid of being manipulated or hurt by them. He feels exposed, and thus threatened by them, causing a far more negative reaction.
If, somehow, someone were to get really close to him despite his reluctance, he may start to be more honest with himself about his feelings for them. Though whether he would then become more affectionate is uncertain.