Absolutely. Depending on the drug of choice, the signs of drug or alcohol use will vary widely. Take some time to learn a little bit more about the signs of intoxication that are specific to the drug they most frequently use. If they are not around you when under the influence but are relapsing when you are not around, you may notice other indications of relapse. These include:
Keeping different hours like staying out late or sleeping in later
A sudden drop in communication
Hearing lots of people in the background that you don’t know when they call
Hesitation when giving you details about what they are doing or where they are
Changes in their story about past events or plans
Odd texts or phone calls in the middle of the night
All of these may appear to be similar to signs that someone you are dating is cheating on you, and many people initially believe that to be the case. Though the two are not mutually exclusive, if your partner is demonstrating these behaviors and is in recovery, it is possible they have relapsed or are in the midst of a relapse.