The question of whether an age difference between two people is "weird" is subjective and depends on various factors, including cultural norms, individual maturity levels, and the specific dynamics of the relationship.
Age differences in relationships are not uncommon, and many couples have successful and fulfilling partnerships despite significant age gaps. What's important in any relationship is open communication, mutual respect, shared values, and emotional compatibility. If both you and your girlfriend are happy and comfortable with the relationship, and it's legal in your jurisdiction, then there is no inherent problem.
However, given the age difference, it's essential to be aware of potential challenges that may arise due to different life stages and experiences. For instance, you might still be in the process of discovering yourself and your goals, while she may have already gone through various life milestones and settled into a more established lifestyle.
Keep in mind that age does not solely define compatibility, and some couples with age differences find that they complement each other well. Nevertheless, it's essential to communicate openly about your expectations, future plans, and any concerns you might have about the relationship.
If you ever feel uncertain or uncomfortable about aspects of the relationship, it can be helpful to seek advice from friends, family, or even a professional counselor who can provide support and guidance. Ultimately, it's your feelings and the dynamics between you and your girlfriend that matter most in determining whether the relationship is right for both of you.