[header] How to stop being a jealous girlfriend [title] Try to pinpoint the root of your jealousy. [step] Some assumptions that you make about how romantic relationships should be can give you unrealistic expectations. Reflect on your beliefs about relationships and focus on identifying ones that could be problematic. 
Consider where those beliefs came from and try to formulate more realistic ideas about being in a couple. [substeps] For instance, the assumption that your partner should be attracted to you and no one else may create unnecessary feelings of envy or inadequacy.