When you're kissing down their chest, you can also use your tongue a bit.
A man may be afraid that kisses with him will not like you, ruin your impression of him, and may even cause a break in relations.
Kissing helps you communicate that you admire and care for your partner and helps your partner feel loved and desired, and vice versa.
Avoid opening your mouth too wide, which can alarm your partner and result in a wet, sloppy kiss.
All along the way it's important to read their energy.
The kissing sound is from your lips, not your voice.