不好意思讓你請客英文

如果你想用英文表達對讓對方請客的歉意，你可以說：

"I'm sorry for making you pay." "I apologize for letting you pick up the tab." "Thank you for treating me, but I'm sorry I couldn't contribute." "I feel bad about letting you pay for me." "I'm really sorry about this, but I didn't expect we'd be eating out and I didn't bring any money."

這些都是比較自然的表達方式，你可以根據具體情況選擇合適的句子。