Acariciar means 'to caress' or 'to stroke'. It's a beautifully tender verb that goes beyond just 'to touch' (tocar), implying a gentle, loving action.
In "LAS FLORES", the singer lists this intimate act, "acariciar tu cara toda la noche" (caressing your face all night), as one of the things he regrets doing. It's a key moment that reveals the deep connection he felt, even as he tries to fight off falling in love.
This song is all about that feeling of instant regret after a great night. The singer is basically trying to take everything back, telling someone, "No debí bailar contigo / Ni darte ese beso que te di" (I shouldn't have danced with you / Or given you that kiss I gave you). They even blame it on the alcohol, claiming "no las sentí" (I didn't feel it), which is a classic move when you're scared of your own feelings.
But the real reason comes out later. It's not about the alcohol; it's about being terrified of getting hurt. The singer admits they've been hurt before and assumes this time will be no different, saying "Siempre que me enamoro pasa igual" (Every time I fall in love, the same thing happens). They are pushing this person away to protect themselves, convinced the other person will just "jugar conmigo" (play with me). It's a sad cycle of wanting to avoid pain so much that you might push away something good.