It's perfectly normal as mentioned. Nothing is wrong and it's part normal sexual development. When you cuddle try to focusing on something else like the movie, book, activity you guys do. Also, try wearing a combination of undergarments and clothing that won't soak through or show through like a jock starp/cup and then regular boxers or briefs over that and or dark color pants (dark jeans) or other combinations of all of the above. I'm sorry if wearing a jock starp sounds drastic but it's just another option avalible to you. Think about it, we wear alot of clothes over other clothes as it is I know it sounds like a lot but it it really isn't.
You can excuse yourself to use the bathroom and "clean up." Maybe your protein intake is high? The more protein intake the more excretion of protein rich fluids flowing so that sperm can survive in the vagina then womb (uterus).
I hope this helps. When pre-cum is not there then that's the time to worry. There's nearly 7 billion on the planet for a reason.
I hope this helps.