it was my boyfriend's birthday and i took him to a yoga class with an old teacher of mine and during the class he made out with a coworker of mine
Dreams about infidelity can often be indicative of feelings of insecurity or mistrust within the dreamer's relationship, but it's important to remember that dreams don't always reflect reality. With that being said, this dream may be a reflection of a fear or insecurity you have about your relationship, or it could signify a lack of trust in your boyfriend.
The fact that the infidelity takes place during a yoga class, which is typically a peaceful and meditative environment, could suggest that you feel betrayed or hurt by your boyfriend's actions even in moments of tranquility or vulnerability.
It's worth considering if there are any real-life situations or concerns that may have triggered this dream. If you're struggling with trust issues or if there are any signs of infidelity in your relationship, it may be a good idea to talk to your partner about your concerns. On the other hand, if there are no real-life issues, it could just be a manifestation of your anxiety or fears.