Hey there,
I'm sorry to hear about the tension and awkwardness you're experiencing with your flatmate. Moving in with friends can sometimes reveal unexpected differences in living habits, and it can be challenging to navigate those situations.
It's great that you've already tried to address the issues by sending a friendly message and expressing your concerns. Communication is key in resolving conflicts, so it might be worth considering having an open and honest conversation with your flatmate about how you're feeling. Choose a calm and relaxed moment to approach them, and express your concerns and feelings in a non-confrontational way. Let them know that you value your friendship and want to find a way to live harmoniously together.
In the meantime, try not to avoid them completely, as it can escalate the tension and make you feel more anxious. Instead, focus on maintaining a respectful and polite attitude. You don't have to be best friends, but being cordial and considerate can help create a more pleasant living environment for everyone involved.
If you find it difficult to have a one-on-one conversation, you could also consider involving a neutral third party, such as another flatmate or a resident advisor, who can mediate the discussion and help find a resolution.
Remember, living with others requires compromise and understanding. It's natural to have disagreements, but finding common ground and respecting each other's boundaries can lead to a more peaceful living situation.
I hope things improve for you soon, and that you're able to find a resolution that works for everyone.
Take care,
Ilya