There is a scene (off view) that intimates a girl is servicing a male (giving head) with slurping/smacking sounds and clearly looks of surprise when someone is calling for them and they jump up on screen and she rolls over off of him. Her mouth has something on it and she is not near his face to have been kissing him.
On their way to El Dorado, Tulio and Miguel come across a spring and you see clothes thrown off and the back of their butts are briefly seen as they run into the water and then they chase after monkeys and their butts are shown again as they come out.
The men agree that since they're supposed to be gods and not give in to temptation, that they'll stay away from Chel, to whom they're both obviously attracted.
Tulio decides to "give into his temptations" and accepts Chel's offer, leading into mild foreplay in the form of rubbing Chel's shoulders, (to Tulio and Chel's pleasure). After the conclusion of a Miguel interlude in the village (including a song), Tulio and Chel are later seen in the temple together in post-play and attempting to pretend nothing happened when they hear a priest entering the doorway. Mostly comical.
A lady can be seen wearing very little clothing throughout the film. Her legs and midriff are exposed, as well as a small amount of her cleavage is visible.
Near the end of the film, Tulio and Chel are officially a couple. After discussing their future together in Spain, they close their agreement with a kiss that turns vividly passionate. The kiss between Tulio and Chel turns immensely passionate that it can only be confirmed by the incredulous, jaw-dropping expression seen by Altivo the horse after he wandered in on the couple. Again comical.