In your experience how long does the honeymoon phase of a relationship last

[Runninggirl]

4 hours ago, stillafool said:

And also to try to get an idea how long your crush will be interested in his girl.  As you can see by him moving her in his place, that won't be happening anytime soon.

As I said in the other tread its not about that. I believe their honeymoon phase is over, and that its progressed by that point. Im asking like I said out of curiosity, mainly because previously Ive based a persons interest in me off of how he treated me in the beginning, and become attached, and when the honeymoon phase ends (which I dont always notice) I feel like I dont recognize them. Its easier if I know "ok for the first six months dont get too attached, dont fully trust what they're saying, who they are etc".