It's concerning that your boyfriend gets mad and blocks you whenever you ask for your belongings back. This behavior may indicate several potential issues in the relationship:
Lack of respect: His unwillingness to return your belongings and his angry reaction when you ask for them back may signify a lack of respect for your boundaries and possessions.
Lack of consideration: If he takes a long time to return your things, it could show a lack of consideration for your needs and priorities.
Selfishness: His refusal to do anything for you while expecting you to lend him items could suggest a selfish attitude.
Communication issues: The fact that he blocks you instead of having a reasonable conversation about the matter indicates communication problems in the relationship.
Power imbalance: This behavior could be a sign of a power imbalance in the relationship, where he exerts control over you through emotional manipulation.
It's essential to address these issues and have an open and honest conversation with your boyfriend about how his actions make you feel. Healthy relationships are built on mutual respect, trust, and communication. If your concerns are not acknowledged or addressed, it might be worth considering whether this relationship is healthy and fulfilling for you. Remember, you deserve to be with someone who respects you and treats you with kindness.