What is this

Im sexually active but dont believe this is sexual; let me know. it started a week ago on my stomach (pic 1) then looks like this a week later (pic 2) but now I ave a second spot that started as soon as the first spot healed! (pic 3) what on earth is this!? (not sure if there is any relation to my first post ive made or stress enduced etc) but i have no other symptoms
but my parter claims he has a “rash” now i have not seen it to confirm or know if it looks the same. everyone else I’ve been in close contact with is completely fine

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