Is it disrespectful to your partner to "remember" your deceased partner?

I notice on Facebook people always give a shout out to their loved ones that they have lost each year to remember them. They mention how much they love and miss them and their good qualities.

I wonder if it would be disrespectful do to this to a deceased spouse/partner if you were to be in a new relationship or marriage?

It seems kind of unfair that you can talk about everyone else except the deceased partner because it may make them jealous or hurt which is understandable. But it’d kind of suck to just keep it all inside of you and not be able to express that.