spoiler.
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i speed read through the novel and there was only 1 chapter with his point of view. in that timeline silvia dies because of robbers (so he doesnt actually sleep with silvia, he just loves her) and the scene where he throws her in prison he was actually thinking that ilya loves her sister and would never kill her and he knows in the back of his mind that ilya is innocent but he was not able to stop his body from going with plot/destiny. after ilya dies soliel is killed by al (the knight). he wakes up in the next life but cannot remember anything and thinks of everything as a nightmare that he cannot remember.
you can read if u wish but i dont think its worth it. ilya doesnt end up with soliel, and soliel doesnt "love" her. there was only 1 chap in his point of view. even though he doesnt "love" ilya he still thinks of her as his wife and wants to respect her. if that makes sense.
there is a scene where he wants to write a letter to his wife and he wanted to write about a flower that reminded him of ilya but his hands instead wrote a letter about politics. but he wrote more letters to silvia even though in his mind he knows its wrong.
when he first saw silvia he wasnt able to control his smile even though he was disgusted(?) by the fact that he was smiling at his fiance's sister.
again u can read if u wish but nothing you expect will hapepen. soliel doesnt fall in love with ilya. the ml is crow. ilya is put through endless suffering for the sake of nothing.
if you want a happier version of this manga (?) you can read this
http://www.mangago.zone/read-manga/the_villainess_wants_to_enjoy_a_carefree_married_life_in_a_former_enemy_country_in_her_seventh_loop/
its a story where fl keeps returning to the point where her engagement is annuled, but fl in this manga has ambitions and isnt hung up over her ex-fiance.
in every life she has a different job and she travels the world and all that.
there's only 2 chapters in this so idk how it ends but give it a try if u want :)
i'm just gonna tell em anyway
isekai with little to no angst :
http://www.mangago.zone/read-manga/i_choose_the_emperor_ending/?Zu24
http://www.mangago.zone/read-manga/cheerful_countess_sisters/
http://www.mangago.zone/read-manga/i_m_a_martial_art_villainess_but_i_m_the_strongest/
http://www.mangago.zone/read-manga/tensei_shitara_slime_datta_ken/?GjSb
http://www.mangago.zone/read-manga/kamitachi_ni_hirowareta_otoko/
http://www.mangago.zone/read-manga/i_won_t_be_breaking_off_this_engagement_you_know_that_right/
http://www.mangago.zone/read-manga/tondemo_skill_de_isekai_hourou_meshi_sui_no_daibouken/
http://www.mangago.zone/read-manga/tondemo_skill_de_isekai_hourou_meshi/
http://www.mangago.zone/read-manga/kage_no_jitsuryokusha_ni_naritakute/
http://www.mangago.zone/read-manga/is_it_a_fortune_or_is_it_a_woe/
http://www.mangago.zone/read-manga/i_want_to_be_a_receptionist_of_the_magic_world/
http://www.mangago.zone/read-manga/queen_cecia_s_shorts/
http://www.mangago.zone/read-manga/the_savior_s_book_caf_in_another_world/
http://www.mangago.zone/read-manga/this_corrupt_world_s_normal_is_difficult/
http://www.mangago.zone/read-manga/bring_the_love/
http://www.mangago.zone/read-manga/golden_time_ryu_hyang/?ZQr8
http://www.mangago.zone/read-manga/the_investigator_of_mueller/
http://www.mangago.zone/read-manga/villainess_maker_1/
just some cute romance:
http://www.mangago.zone/read-manga/reversed_love_route/
http://www.mangago.zone/read-manga/a_guide_to_proper_dating/
http://www.mangago.zone/read-manga/it_s_difficult_to_love_an_otaku/
if u want satisfying revenge plot the try "your crown" from w*btoon, its free and its almost caught up wi the mangago fan translations.
it has a mangago link but i dont want to share since its free in the official website.

spoilersssss.
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so i just started reading the novel and ilya goes through a lot of shit in a lot of lifetimes.
but the ting is in the chapter from soleil's pov we find out that he's actually not in love with silivia. when they first meet soleil is unable to control his body and smiles towards silvia, and is harsh towards ilya even though he wants to se her smile.
so basically soleil is being controlled by the "plot" (?)