Further reading
In addition to the titles referenced directly in My Marxist Valentine, there are many other books which contributed to the research of it, and the thinking behind it.
Some are hard to track down, and these are listed at the end - but for the rest, here they are, spread out across some favourite indie bookshops.
(More titles to be added!)

The Communist Manifesto & Other Selected Writings - Karl Marx and Friedrich Engels
All About Love: New Visions - bell hooks
Women, Race & Class - Angela Davis
Gender Trouble - Judith Butler
Tomorrow Sex Will Be Good Again: Women and Desire In the Age of Consent - Katherine Angel
The Care Manifesto: The Politics of Interdependence - The Care Collective
Abolish The Family: A Manifesto for Care and Liberation - Sophie Lewis
Anarchism and Other Essays - Emma Goldman
Women in Dark Times - Jacqueline Rose
*

Bread and Roses: Gender and Class Under Capitalism - Andrea D'Atri
Who's Afraid of Gender? - Judith Butler
Enemy Feminisms: TERFs, Policewomen and Girlbosses Against Liberation - Sophie Lewis
*

Capital - Karl Marx (foreword by Wendy Brown)
The Accumulation of Capital - Rosa Luxemburg
A Rebel's Guide to Eleanor Marx - Siobhan Brown
A Rebel's Guide to Rosa Luxemburg - Sally Campbell
*

Radical Intimacy - Sophie K Rosa
Magical Marxism - Andy Merrifield
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They Call It Love: The Politics of Emotional Life - Alva Gotby
A Companion to Marx's 'Capital' - David Harvey
The Letters of Rosa Luxemburg - Rosa Luxemburg
Eleanor Marx: A Biography - Yvonne Kapp
*

The Communism of Love: An Inquiry Into the Poverty of Exchange Relations - Richard Gilman-Opalsky
Love and Capital: Karl and Jenny Marx and the Birth of a Revolution - Mary Gabriel
Love, Anarchy, & Emma Goldman - Candace Falk
Considering Emma Goldman - Clare Hemmings
The Fear of Freedom - Erich Fromm
The Art of Loving - Erich Fromm
*
Sasha and Emma: The Anarchist Odyssey of Alexander Berkman and Emma Goldman - Paul Avrich & Karen Avrich (Amazon link, but worth checking the brilliant AbeBooks first.) This book had more sticky notes in it than any other while I was writing - highly recommend if you're interested in their story and the anarchist movement at that time more generally!)
Currently can only find second-hand on AbeBooks etc:
Rosa Luxemburg: A Life - Elzbieta Ettinger
Comrade and Lover: Rosa Luxemburg's Letters to Leo Jogiches (translated & edited by Elzbieta Ettinger