After the breakup, he felt like his heart was hammered like glass.
После расставания он чувствовал, что его сердце разбито как стекло.
Определения
Extremely drunk or intoxicated; the phrase uses 'hammered' (slang for very drunk) and compares the state to glass, which shatters easily, implying someone is so drunk they are 'broken' or incapacitated like shattered glass.