A toxic girlfriend can manifest itself in a variety of ways. Generally, these relationships involve some form of control or manipulation on the part of the partner. This could include belittling comments, jealousy and possessiveness, gaslighting, guilt-tripping and other forms of emotional abuse. Additionally, they may try to limit their significant other’s freedom by setting restrictions on who they can talk to or where they can go without them. In extreme cases, this kind of behavior may even lead to physical violence or threats against their partner's safety. Ultimately, if your relationship feels like it is taking away from your sense of self-worth or autonomy then it is likely unhealthy and should be addressed immediately before it gets worse.