What does the kissy face emoticon mean when he often uses it to say goodnight?

Anonymous
So, my boyfriend and I decided over a month ago that we would "take things slow" because he's not ready for a commitment yet because he's gotten used to having all his freedom.

He was cheated on in his last relationship with a controlling psycho (trust me, I have had firsthand experience with her), so he's not ready yet to give in to me.

It took me some time to come to terms with his need for space, but I've finally learned to be okay with giving it to him. We see each other once a week, sometimes once every 2 weeks depending on our schedules.

In the beginning, we got intimate pretty quickly. Our texts were very flirty, and we used kissy emoticons VERY frequently, even for just casual texts. But since he wanted to slow things down, flirty texts have pretty much gone out the window. This type of flirting is on his terms.

I've noticed that he'll often use kissy face emoticons in goodnight texts, even if I don't use them to say goodnight.

Does this mean something?
What does the kissy face emoticon mean when he often uses it to say goodnight?
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