These sentences carry more than a hint of promiscuous, playful flirtation. Taken separately and in certain context, they could have different, innocent and completely non-salacious meanings, but since you have the two together it seems obvious that the two are part of a solicitation (or, invitation, if you like).
1. I'll go easy on you, OK? or, I'll be gentle with you, OK? Both of your interpretations are possible, but if my presumption is correct and the writer is trying to coerce the reader into the bedroom, the not-so-subtle suggestion is that the writer will be gentle in bed (or, "do something in a gentle way" as you say). It is not a general promise of eternal gentleness.
2. The person isn't talking to the food as if it were a person. It is the other way around. Taken literally it means "I just want to take a bite", and in an erotic context that translation works. Anyway, the implication is that the speaker/writer is looking for a little fun ("Just give me a little taste" kind of thing).
Ahh, to be young again.
With envy,
Majestic