It all boils down to: climax outside of intercourse is not allowed.
If you’re going to have intercourse, anything you do leading up to intercourse that’s not offensive, degrading or dangerous is OK.
If you’re not going to have intercourse, you must be aware of your personal “point of no return” and not go beyond it. As married people, you have rights that single people do not in regards to touching each other and expressing love, even when you do not intend to “go all the way.” You simply must not go so far in this expression that climax is inevitable. Newlyweds have more leeway here, because they’re just learning about their sexuality. Mistakes happen when you’re learning. But God knows your intentions, and you cannot plan an “accidental” climax.
Also, because of the differences between men and women, you need to be careful not to lead your spouse into solitary sin. What is a “safe” level of stimulation for one may be too much for the other. Keep communicating!
God bless you!
Betsy