Heard this first hand from a Baal Teshuva:
“It’s very possible to say that Yaakov should not have done it (Just like Dinah went out-she shouldn’t have). They don’t go out with these intentions, but that’s what was interpreted. Just like the brothers thought that Yaakov favored Yosef-they misinterpreted.
Yaakov did not kiss Rachel because he was overwhelmed with attraction for her. There was an opening up of Ruach Hakodesh and a recognition of a relationship with this person that was special-different in Yaakov’s life. Yaakov and Rachel were deeply connected to one another. We can’t relate to Ruach Hakodesh, when it comes on it could be it’s such a flood of emotions and feelings that you become overwhelmed. “
Hope that answers your question…