Hi Aesir
First time through the Holidays alone, Valentines included, can be difficult. It doesn't have to be "hell", it will help if you prepare yourself for it though. Probably best not to place yourself where memories of your ex will be top of mind. Perhaps some time with friends or family that can be supportive would be good. If that is not possible, maybe plan to login here and talk with others that may be struggling with the same.
This is my second valentines without my ex. The first one was challenging but not overwhelming - probably not overwhelming b/c she and I did not have a big routine around what we considered to be a Hallmark Holiday.
How long have you been apart from your ex?
It's been 3 months.